Cover for an electric fan



FIG. 1 is a top, front, and right side perspective view of a cover foran electric fan showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is a left side elevational view thereof, the right side being amirror image of that shown.

The ornamental design for a cover for an electric fan, as shown anddescribed.